CLT LED Display board 1)Pixel pitch:4mm High resolution 2)CE,ROHS,CCC,UL, ... LED display board with gray mask1)Pixel pitch:4mm High resolution2)Certificate:CE,ROHS,CCC,3)Delivery time ... mask5)Our updated new product Ph4mm 3-in-1 SMD indoor full-color LED display ItemParameter PixelPhysical pixel pitch: ... to pixels display synchronized Detail info on the P4 SMD 3 IN1 gray mask 3.Certificate: Package: 2 ...